TY - JOUR
T1 - Residual stresses in welded I section steel members
AU - Tankova, Trayana
AU - Simões da Silva, Luís
AU - Balakrishnam, Marimuthu
AU - Rodrigues, Dulce
AU - Launert, Benjamin
AU - Pasternak, Hartmut
AU - Tun, Tin Yadanar
PY - 2019/10/15
Y1 - 2019/10/15
N2 - Residual stresses have major influence on the stability of steel members. It is well-known that, due to the differences in manufacturing procedures, the residual stresses for welded and hot – rolled members are rather different. In the same way, despite several studies on residual stresses distribution and magnitude for hot-rolled members were already done, for prismatic and tapered welded I section steel members the investigation is still very scarce. In the current work, an experimental programme on the buckling resistance of tapered members, with different tapering ratios and section heights, was conducted and residual stress measurements were carried out using the sectioning method. Numerical simulations of the heat input during welding were also performed in order to predict the residual stress fields. A statistical analysis of the residual stresses distribution for welded I section members was performed, using the experimental and numerical results, as well as literature data. Systematized information on residual stresses distribution and magnitude was generated and some guidelines for the statistical characterization of residual stresses in welded members were proposed.
AB - Residual stresses have major influence on the stability of steel members. It is well-known that, due to the differences in manufacturing procedures, the residual stresses for welded and hot – rolled members are rather different. In the same way, despite several studies on residual stresses distribution and magnitude for hot-rolled members were already done, for prismatic and tapered welded I section steel members the investigation is still very scarce. In the current work, an experimental programme on the buckling resistance of tapered members, with different tapering ratios and section heights, was conducted and residual stress measurements were carried out using the sectioning method. Numerical simulations of the heat input during welding were also performed in order to predict the residual stress fields. A statistical analysis of the residual stresses distribution for welded I section members was performed, using the experimental and numerical results, as well as literature data. Systematized information on residual stresses distribution and magnitude was generated and some guidelines for the statistical characterization of residual stresses in welded members were proposed.
KW - Eurocode 3
KW - Experimental tests
KW - I section
KW - Residual stresses
KW - Stability
KW - Steel
KW - Welded sections
KW - Welding simulation
UR - http://www.scopus.com/inward/record.url?scp=85069521226&partnerID=8YFLogxK
U2 - 10.1016/j.engstruct.2019.109398
DO - 10.1016/j.engstruct.2019.109398
M3 - Article
AN - SCOPUS:85069521226
SN - 0141-0296
VL - 197
JO - Engineering Structures
JF - Engineering Structures
M1 - 109398
ER -